IMO watch it, as a movie it wasn't bad, it's just 30 years too late.
Spoilers:
The "anti-Christian" message is way oversold, they botched childhood memories and disney princesses more & the fact that I can even say that about an alien movie is honestly pretty fucked up. It was boring & stereotypical, Emily Blunt DID do a good job IMO, certainly the best with what she had to work with. Overall it was a generic alien movie with hardly any aliens, a really poor chase plot, a 1/2 a crop circle, outdated technology (and this is actually really bad for the plot - the guy has data, cyber, IT knowledge "powers" so having his entire side of the operation be extremely outdated tech makes it really awkward) and unbelievable global reactions (were meant to believe that from 1 studio it gets globally broadcast & every one cares and is shocked).
So imo, watch it for the score and filmography, but the script & story is severly disappointing.